# IOU vs SpottedFlips

IOU and SpottedFlips both sit at 5.0 stars, but that hides the real split: 100% of SpottedFlips's written reviews are positive against 83% of IOU's. IOU's advantage is monetization model (ad-supported vs free with in-app purchases). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. IOU sells 1 in-app purchase, starting at $9.99 per month and SpottedFlips sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for IOU against 4.9 for SpottedFlips. Both are backed by a comparable volume of ratings — 8 and 9 respectively. Written reviews are what separate them: 83% of IOU's written reviews are positive against 100% of SpottedFlips's.

IOU ships an update every 5 days, SpottedFlips every 4 days. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | IOU | SpottedFlips |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/iou-marker/id6746040680/reviews)** | [4.9 (9 ratings)](https://appshunter.io/ios/app/spottedflips/id6760681619/reviews) |
| Number of ratings | 8 | **9** |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 149 MB | 67 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [IOU Marker](https://appshunter.io/developer/1814814238) | [MealSlash LLC](https://appshunter.io/developer/1885707943) |

## What reviewers say

### IOU

[App page](https://appshunter.io/ios/app/iou-marker/id6746040680)

Create professional agreements and manage payments effortlessly. Draft documents using AI, e-sign, and track invoices and due dates in one organized platform. Secure sign-in ensures your data is protected.

**Highlights:** AI-powered agreement drafting, E-signature functionality, Payment and invoice management, Due date reminders, Dispute tracking, Secure sign-in

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IOU Pro | $9.99 | per month |


### SpottedFlips

[App page](https://appshunter.io/ios/app/spottedflips/id6760681619)

Discover hidden clearance deals at major retailers before others do. Receive push alerts for new deals in your area and get aisle locations to find items quickly. Calculate profit potential and list items on eBay directly from the app.

**Highlights:** Clearance deal discovery, Push alerts for local deals, Aisle location information, eBay comps and profit calculation, One-tap eBay listing, Save money or flip for profit

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Penny Hunter | $4.99 | per 7 days |
| SpottedFlips Pro | $9.99 | per month |
| SpottedFlips Pro Monthly | $24.99 | per month |
| SpottedFlips Pro | $24.99 | per month |
| SpottedFlips Pro | $149.99 | per year |


## Frequently asked questions

### Is IOU free?

IOU is free to download, with in-app purchases available.

### Is SpottedFlips free?

SpottedFlips is free to download, with in-app purchases available.

### Which has better reviews, IOU or SpottedFlips?

IOU is rated higher. IOU averages 5.0 out of 5 from 8 ratings, while SpottedFlips averages 4.9 from 9 ratings.

### Do IOU or SpottedFlips have ads?

Both IOU and SpottedFlips show ads.

### Which is updated more often, IOU or SpottedFlips?

IOU ships an update every 5 days, and SpottedFlips every 4 days. Most recently, IOU was updated on October 14, 2026 and SpottedFlips on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*